Some counties post the listing for X amount of weeks, sell on courthouse steps, money is due in full within hours of your winning bid, but you don't get physical possession of the property that day.

This is based on my investment situations.I believe that as soon as you take possession of the property, you are able to use the tenants rental payment as income.

As a renewal, tenant already has possession, and had possession, before I purchased the building. 

April (New Owner) offers Bob and Sally (Current Tenants) $1500 to move out and return full possession of the unit located at 123 Anywhere Ave in Anytown, USA on or before March 30th, 2020. 

Simple, first everyone one knows when the first is so it has to be in my possession on the first or a late fee is automatic and will be followed up with a Notice to Pay/Quit at a time of my choosing. 

The male had 9 felonies all more than 12 years back, and she has a possession felony that she is on probation for (about 1 1/2 years ago). 

As much as I would love to gain new clients through BP, I'm really here to soak up the wealth of knowledge this community possesses.

Check out the thread "The Occupants from Hell" where an experience investor is involved in a 4+ year legal battle to get possession of his property. 

So how does the possession of the note and foreclosure sale happen so fast?

I would also advise taking photos of the entire property after taking possession for additional documentation should you need to provide it in a claim, though a good inspection report usually does the trick.